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FILE STATUS <data_file> / GETVAR=<mask_character>,<n>,<col> 
prints the status and name of the <n>th variable
with mask <mask_character> in mask column <col> 
on the line below the command line.
Default values are GETVAR=A,1,1

If the variable satisfying the GETVAR specification is not found.
NOT FOUND! is printed.

This operation is used mostly by sucros for studying properties of
a given data set.

  D = More information on data management